JP2929754B2 - Manufacturing method of liquid crystal display device - Google Patents
Manufacturing method of liquid crystal display deviceInfo
- Publication number
- JP2929754B2 JP2929754B2 JP3095762A JP9576291A JP2929754B2 JP 2929754 B2 JP2929754 B2 JP 2929754B2 JP 3095762 A JP3095762 A JP 3095762A JP 9576291 A JP9576291 A JP 9576291A JP 2929754 B2 JP2929754 B2 JP 2929754B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- liquid crystal
- crystal display
- substrates
- manufacturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Liquid Crystal (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、液晶表示装置の製造方
法に係り、特に均一なギャップを得るのに適した液晶表
示装置の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a liquid crystal display, and more particularly to a method for manufacturing a liquid crystal display suitable for obtaining a uniform gap.
【０００２】[0002]
【従来の技術】従来の液晶表示装置の製造方法は、一対
の基板をシール部材及びギャップ制御材を介して貼り合
わせた後、平行度及び平坦度が出ている一対の治具間に
挟み込み、シール部材が硬化するまで同じ圧力をかけて
所定のセルギャップを得ていた。2. Description of the Related Art In a conventional method of manufacturing a liquid crystal display device, a pair of substrates are bonded via a sealing member and a gap control material, and then sandwiched between a pair of jigs having a high degree of parallelism and flatness. The same pressure was applied until the sealing member was cured to obtain a predetermined cell gap.
【０００３】[0003]
【発明が解決しようとする課題】しかし、前述の従来技
術では、所定のセルギャップを短時間で得るために圧力
を高くすると、特にギャップ制御材が表示領域外のみに
形成されている場合に、セルギャップが低くなり、逆に
圧力を低く設定すると、特に瞬時硬化型の樹脂をシール
部材に用いた場合に、所定のギャップが得られるまで時
間がかかるという課題を有する。However, in the above-mentioned prior art, when the pressure is increased in order to obtain a predetermined cell gap in a short time, especially when the gap control material is formed only outside the display area, When the cell gap is reduced and the pressure is set to be low, there is a problem that it takes time until a predetermined gap is obtained, particularly when an instant-curing resin is used for the sealing member.
【０００４】そこで本発明はこのような課題を解決する
もので、その目的とするところは、短時間で精度よく所
定のセルギャップを得る所にある。Accordingly, the present invention is to solve such a problem, and an object of the present invention is to obtain a predetermined cell gap with high accuracy in a short time.
【０００５】[0005]
【課題を解決するための手段】本発明は、一対の基板を
シール材を介して貼り合わせ、前記一対の基板間に液晶
を挟持してなる液晶表示装置の製造方法において、前記
一対の基板を貼り合わせる工程と、前記一対の基板に第
１の圧力で加圧する工程と、前記一対の基板に第１の圧
力よりも小さい第２の圧力で加圧する工程とを有するこ
とを特徴とする。According to the present invention, there is provided a method of manufacturing a liquid crystal display device comprising a pair of substrates bonded together with a sealant therebetween and a liquid crystal sandwiched between the pair of substrates. The method includes a step of bonding, a step of pressing the pair of substrates with a first pressure, and a step of pressing the pair of substrates with a second pressure smaller than the first pressure.
【０００６】[0006]
【実施例】本発明の実施例を以下図面を用いて説明す
る。本発明の製造工程は、図１に示すように、まず、液
晶を駆動するための薄膜トランジスター２及び画素電極
３をマトリックス状に形成したガラス基板１とカラーフ
ィルター層５及び共通電極６を形成したガラス基板４を
スクリーン印刷法により形成した、ギャップ制御材７が
入っているシール部材８を介して貼り合わせる。（図１
（ａ））本実施例では、ギャップ制御材７にはグラスフ
ァイバーを用い、シール部材８には紫外線硬化型樹脂を
用いたが、ギャップ制御材７及びシール部材８はこの材
料に限定されるものではなく、均一な厚みを有し、かつ
一対の基板を接着でき、液晶と反応しない材料ならばな
んでもよい。たとえば、ギャップ制御材７には、ガラス
ボール、樹脂ボールなどがある。また、シール部材８に
は、エポキシ等の熱硬化型樹脂、可視硬化型樹脂などが
ある。さらに、ＰＥＴ（ポリエチレンテレフタレート）
やナイロンなどの樹脂スペーサーをギャップ制御材７と
シール部材８を兼ねて用いてもよい。Embodiments of the present invention will be described below with reference to the drawings. In the manufacturing process of the present invention, as shown in FIG. 1, first, a glass substrate 1 on which thin film transistors 2 and pixel electrodes 3 for driving liquid crystal were formed in a matrix, a color filter layer 5 and a common electrode 6 were formed. The glass substrate 4 is bonded via a seal member 8 formed by a screen printing method and containing a gap controlling material 7. (Figure 1
(A) In this embodiment, glass fiber is used for the gap control member 7 and ultraviolet curing resin is used for the seal member 8, but the gap control material 7 and the seal member 8 are limited to this material. Instead, any material can be used as long as it has a uniform thickness, can bond a pair of substrates, and does not react with the liquid crystal. For example, the gap control member 7 includes a glass ball, a resin ball, and the like. The seal member 8 includes a thermosetting resin such as epoxy, a visible curing resin, and the like. Furthermore, PET (polyethylene terephthalate)
A resin spacer such as nylon or nylon may be used as the gap control member 7 and the sealing member 8.
【０００７】次に、貼り合わせた基板の位置合わせ（ア
ライメント）を行った後に、紫外線を透過させるガラス
基板９とエアーシリンダー１０からなる治具の間に基板
をセットし、まず所定のセルギャップを短時間で得るた
めに１平方センチ当たり１０ｋｇの圧力をかけ、１分間
この状態で保持する。（図１（ｂ））この時、図２に示
すように１ｋｇ以下の加圧では所定のセルギャップが得
られず、１〜１０ｋｇの加圧で所定のセルギャップを得
られる時間が圧力に比例して短くなり、１０ｋｇ以上の
加圧では１０ｋｇでの加圧時間と変わらず、ただ基板の
変形量のみ増加する。Next, after positioning (alignment) of the bonded substrates, the substrates are set between a jig composed of a glass substrate 9 that transmits ultraviolet light and an air cylinder 10, and a predetermined cell gap is first set. A pressure of 10 kg per square centimeter is applied for a short time and is kept in this state for one minute. (FIG. 1 (b)) At this time, as shown in FIG. 2, a predetermined cell gap cannot be obtained with a pressure of 1 kg or less, and a time in which a predetermined cell gap can be obtained with a pressure of 1 to 10 kg is proportional to the pressure. When the pressure is 10 kg or more, only the deformation amount of the substrate increases, which is the same as the pressurization time at 10 kg.
【０００８】次に、基板の変形を除去するために圧力を
１平方センチ当たり１．５ｋｇに減圧し、この状態で３
０秒経過後、紫外線をガラス基板９を通して一対の貼り
合わせた基板に照射しシール部材８を硬化させる。（図
１（ｃ））ここで、シール部材８にエポキシなどの熱硬
化型樹脂を用いる場合には、樹脂の完全硬化時間の約１
／４の時間で圧力を減圧することにより本発明の目的は
達成される。Next, the pressure is reduced to 1.5 kg / cm 2 in order to remove the deformation of the substrate.
After a lapse of 0 seconds, the pair of bonded substrates is irradiated with ultraviolet light through the glass substrate 9 to cure the seal member 8. (FIG. 1 (c)) Here, when a thermosetting resin such as epoxy is used for the seal member 8, it takes about one time for the complete curing time of the resin.
The object of the present invention is achieved by reducing the pressure in a time period of / 4.
【０００９】また、表示領域にも樹脂ボールなどのギャ
ップ制御材７を形成する場合には、減圧後の圧力を１平
方センチ当たり２．５ｋｇにすることにより本発明の目
的は達成される。When the gap control member 7 such as a resin ball is formed also in the display area, the object of the present invention can be achieved by reducing the pressure after the pressure reduction to 2.5 kg per square centimeter.
【００１０】さらに本実施例では、圧着治具にエアーシ
リンダーを用いた治具を使用し電空レギュレーターによ
り圧力制御して所定のセルギャップを得たが、シリコン
ゴムなどを用いて直接貼り合わせた基板を圧着する治具
を用いて、電空レギュレーターにより圧力制御してもよ
い。また、平行な治具の間に貼り合わせた基板を挟み重
りをのせて圧着する治具を用いた場合には、重りを途中
で減らすことで圧力を切り替えてもよい。Further, in the present embodiment, a predetermined cell gap was obtained by controlling the pressure with an electropneumatic regulator using a jig using an air cylinder as a crimping jig, but was directly bonded using silicon rubber or the like. The pressure may be controlled by an electropneumatic regulator using a jig for pressing the substrate. In the case where a jig is used in which the bonded substrate is sandwiched between parallel jigs and a weight is placed on the jig and pressure is applied, the pressure may be switched by reducing the weight in the middle.
【００１１】最後に、液晶層１１を真空封入した後、封
入口を封止して液晶表示装置を得る。（図１（ｄ））以
上の如く、圧力を少なくとも２段階以上に切り替えて一
対の基板を圧着することにより、短時間で所定のセルギ
ャップが得られた。Finally, after the liquid crystal layer 11 is vacuum-sealed, the sealing port is sealed to obtain a liquid crystal display device. (FIG. 1 (d)) As described above, a predetermined cell gap was obtained in a short time by pressing the pair of substrates while changing the pressure in at least two stages.
【００１２】[0012]
【発明の効果】本発明は以上説明したように、圧力を少
なくとも２段階以上に切り替えて一対の基板を圧着する
ことにより、短時間で所定のセルギャップが得られた。
特に、本実施例のように表示領域にギャップ制御材を形
成しないセルでは、セル中央部が薄くなることが全くな
くなり、この方法で製造した液晶表示装置は、非常に良
好な表示品質が得られた。As described above, according to the present invention, a predetermined cell gap can be obtained in a short time by pressing a pair of substrates while changing the pressure in at least two stages.
In particular, in the cell in which the gap control material is not formed in the display region as in the present embodiment, the central portion of the cell never becomes thin, and the liquid crystal display device manufactured by this method can obtain very good display quality. Was.
【００１３】また、本実施例のように紫外線硬化型樹脂
を用いた場合には、製造時間が大幅に短縮でき、歩留ま
りも良くできることから、大量で安価に液晶表示装置が
製造できるという効果がある。When an ultraviolet-curable resin is used as in this embodiment, the manufacturing time can be greatly reduced and the yield can be improved, so that there is an effect that a large amount of liquid crystal display devices can be manufactured at low cost. .
【図１】本の製造工程を示す図である。FIG. 1 is a diagram showing a manufacturing process of a book.
【図２】圧力と処理時間及び基板の変形量を示す図であ
る。FIG. 2 is a diagram illustrating pressure, processing time, and deformation amount of a substrate.
１ ガラス基板 ２ 薄膜トランジスター ３ 画素電極 ４ ガラス基板 ５ カラーフィルター層 ６ 共通電極 ７ ギャップ制御材 ８ シール部材 ９ ガラス基板 １０ エアーシリンダー １１ 液晶層 DESCRIPTION OF SYMBOLS 1 Glass substrate 2 Thin film transistor 3 Pixel electrode 4 Glass substrate 5 Color filter layer 6 Common electrode 7 Gap control material 8 Sealing member 9 Glass substrate 10 Air cylinder 11 Liquid crystal layer
Claims (1)
せ、前記一対の基板間に液晶を挟持してなる液晶表示装
置の製造方法において、 前記一対の基板を貼り合わせる工程と、前記一対の基板
に第１の圧力で加圧する工程と、前記一対の基板に第１
の圧力よりも小さい第２の圧力で加圧する工程とを有す
ることを特徴とする液晶表示装置の製造方法。1. A method for manufacturing a liquid crystal display device, comprising: bonding a pair of substrates via a sealing material, and sandwiching a liquid crystal between the pair of substrates; Pressurizing the substrates with a first pressure; and applying a first pressure to the pair of substrates.
Pressurizing with a second pressure smaller than the pressure of the liquid crystal display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3095762A JP2929754B2 (en) | 1991-04-25 | 1991-04-25 | Manufacturing method of liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3095762A JP2929754B2 (en) | 1991-04-25 | 1991-04-25 | Manufacturing method of liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04324823A JPH04324823A (en) | 1992-11-13 |
| JP2929754B2 true JP2929754B2 (en) | 1999-08-03 |
Family
ID=14146503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3095762A Expired - Lifetime JP2929754B2 (en) | 1991-04-25 | 1991-04-25 | Manufacturing method of liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2929754B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6100958A (en) * | 1995-11-09 | 2000-08-08 | Sharp Kabushiki Kaisha | Method of manufacturing liquid crystal element comprising maintaining pressure by controlling vacuum in the cell gap during hardening of sealant |
| JP4614588B2 (en) * | 2001-06-29 | 2011-01-19 | 三洋電機株式会社 | Method for manufacturing electroluminescence display device |
-
1991
- 1991-04-25 JP JP3095762A patent/JP2929754B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04324823A (en) | 1992-11-13 |
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